I would like to make the pattern below (I removed the http):
knitting-and.com/knitting/patterns/clothing/linda.htm

I do not understand this line after the second row in the Right Front section.
"(The edge stitch at the beginning of each pattern row, as given from ** to **, is omitted after the Moss Pattern border)"

Yes, the pattern rows have an edge st at each end. The fronts of the dressing gown have a moss st border and then a pattern repeat. The line you're asking about in the R front section (The edge stitch at the beginning of each pattern row, as given from ** to **, is omitted after the Moss Pattern border) is telling you to omit the edge st between the moss st edging and the beginning of the pattern sts.